By B. Chandrasekaran; K. Annadurai; E.Somasundaram
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Additional resources for A Textbook of Agronomy
The FAO estimates clearly indicate the increasing shortage of cereals in 90 developing countries. Increase in food all over world during the decades of 1972–92 was remarkable. Productivity and production in the technologically advanced agriculture of the developed countries rose to heights that would have been unbelievable half a century ago, mainly due to introduction of high yielding varieties (HYVs) responsive to inputs of fertilities and irrigation water, besides increase in area under cultivations.
The proportion of working population engaged in agriculture in other countries is very small. K. , 6 per cent in Australia and 7 per cent in France. In backward and underdeveloped countries the proportion of working population engaged in agriculture is quite high. For instance, it is 42 per cent in Egypt, 52 per cent in Indonesia and 72 per cent in China. C. Contribution of Manpower to industry The agricultural labourer of rural sector has been the supplier of manpower to industry. The findings of the Commission on Labourer are indicative that the Indian factory operatives were nearly all migrants from the rural areas.
6 AN INTRODUCTION TO AGRONOMY The word agronomy has been derived from the two Greek words, agros and nomos having the meaning of field and to manage, respectively. Literally, agronomy means the “art of managing field”. Technically, it means the “science and economics of crop production by management of farm land”. Definition : Agronomy is the art and underlying science in production and improvement of field crops with the efficient use of soil fertility, water, labourer and other factors related to crop production.